Drill-rope coupling.



Patented Mar. 18, 1913.

` 2 SHEETS-SHEET z.

W. W. PARMETER.

DRILL ROPE GOUPLING.

/ .f 'SSES "UNTFSD STATES BRILL-ROE COUPLING.

Specification of Letters Patent.

tearetreea aree is, iota.

Application filed August l5, 1910. Serial lmi''ti'.

To alt whom 'it may concern Be it known that l, lVALLAon lV. Pan- Mnrnn,a citizen of the United States, residing at. Eldred, in the cuinty oflliclean and State oi Pennsylvania, have invented new and usefulImprovements in Drill-Rope Couplings, of which the following is a specitication.

This invention relates to couplings designed 'to secure cables to tools,and especially to secure the Wire or other cables to drills and the likeused in boring Wells, and is in the nature of an improvement upon theconstruction described and claimed in Tnited States Letters Patent No.890001 granted to Ine June 9, 1908. p

The general object otl the present invention is to simplify, cheapen andimprove the operation oi the construction shown in the patent referredto.

In the construction described and claimed in iny priorl patent, thecable was prevented from slipping too :tar lthrough the drill end of thecoupling by the 'tool itself and lthere Was some liability of theoccurrence ot this slipping when the tool was' detached.

A special obj ectof the present invention is to avoid this diliculty andto secure the coupling to the cable that they Will be held together justas rigidly when the tool is detached as when it is attached to thecoupling.

lll/lith these objects in view the invention consists in the improvedconstruction, arrangement and combination of parts hereinafter fullydescribed and afterward spe'ciiically pointed out` in the appendedclaini.

l have illustrated one embodiment ot my invention in the accompanyingdrawings, in which:

Figure 1 represents a view in side elevation, the cable being' shownsecured in the coupling. Fig. 2 represents a sectional view taken on adianieti'ic pla-ne passing through the device of Fig. 1. Fig. 25represents in perspective. onesection otl the core, looking at theinterior thereof. Fig. 4 represents a .similar view of one of theclamping ineinbers. Fig. 5 representsl a transverse sectional vieiv onan enlarged scale, taken on the plane indicated by the broken line 5 inFigs. 1 and 2.

Like reference characters marl: the saine parts in all of the figures ofthe drawings. Referring specifically to the drawings, 13 indicates thc'tubular body portion creasing of my coupling preferably partially ofangular outward form, as at 7, to facilitate the application of a Wrenchor holding tool, and

having a central longitudinal bore or open# 1ng8 extending through it-Which increases i in diameter gradually from the op to point indicatedat `9 and from-this point to the bottom more' abruptly, the pitchincreasing materially atsaid point 9. That part of the bore from the topto the point 9 is smooth but that portion beloa7 that point may bethreaded `or otherwise prepared to receive a suitable boring crl othertool to be suspended from the cable (not shown).

At 10 is indicated a tubular core conically tapered, increasin indiameter' tromthe top tothe bot-torn with preferably about the samepitch as thatportion of the bore or opening 8 above the point 9 and of agpreater length than that part of said bore, the f- ,greater portion ofits length being preferably sinooth on the outside, While 'the upperportion is threaded as at 1.1.

"The core 10 is preferably composed of two identical halves o rsections100, oneof which the chambers 12 and-bores 13 register accu A rately andform in the corea central longitudinally extending conically taperedchainber 14%, F ig. :2, and two central, longitudinal, cylindricalopenings 15 and 16., the one lcading from the top of the .chamberl 11,1vout through the top of the core 10 and the other from ythe bottoni ofthe chamber through the bottom of the core. all as lshown in said it 17in Fig. e., is shown in detail one section of two identical clampingmembers adapted to tit ivithinthe chamber 14 ot the core l0, as shown inFig. 2, the said'.

clamping members being increasingly tafra pered on their outer surfacesfrom the top zzto the bottoni to correspond with the taper l of theWalls oi the chamber in which they lit, and provided with interiorlongitudi nally extending grooves, as at 18 in Fig. 4, forming, when thesections are brought together, as in Fig. a longitudinal bore,preferably formed with spiral grooves, as

at 19in Fig. 4, to correspond; in pitch with and receive and hold theLviist d strands of a", cable 20, (Fig. 2). The spiral grooves may beomitted if desired.

The clamping members are preferably of Slightly less length than thechamber let of the Core l() in order that they may be at'-, forded aslight longitudinal adjustment to cause them, by virtue of their conicalform and the corresponding form of the chamber, to more closely clampthe cable when desired.

At 24 is indicated a nut, interiorly threaded to lit upon the thread ilof the core 10 when the parts are assembled, said nut beingY lockedagainst accidental turning of by any suitable means, lsuch for instance,as a set screw as at Q2, in Fig; l.

A proper fit ot the two sections of the core is assured when they arebrought together 4by any suitable means, such, for instance, as smallpins or lugs 2l Fig. which project transversely from one section andengage corresponding recesses in the other sectio-n (not shown).

At 23, Fig. 2, is indicated paclings of any suitable form and material,serving, when the parts are assembled, to keep all water and sedimentfrom entering into the interior of the body of the device, therebypreventing damage by oxidation or otherwise, which would prevent the,slidii'ig of the core in the body. to tighten the grip of the clamp onthe cable. Apacking may be used at the lower endof the core but this isusually unnecessary as the tool screwed into the lower end of the bodyis generally sufficient to prevent the entrance of water between thebody and core.

To assemble the parts of thev device, the cable is passed through thenut 2l and the bore of the body G, the end of the cable pro- 'ectingbeyond the lower end of the body ing now wrapped with wire, or held in atemporary clamp to prevent untwisting. The lamping members 17 are nowplaced upon alle cable and a pin driven into it through a 'uitable hole,as for instance at 25 in Fig. 4 -and the two members 100 of the core l0placed upon the cable ii'iclosing the clamping members in the Achamber14, the two members being caused to fit together in their proper placesby the lugs Qel iitting into their receiving recesses, (not shown).

. -fhe core, with the inclosed clamping :members and cable, is passedupward through bore of the body until it lits closely. inthe upperportion of the bore of the body, the threaded portion of the coreprojecting Losanna above the top of the body upon which the nut F21 1snow screwed squeezing the packing between the nut and the upper end ofthe body and drawing the core upward in the upwardly decreasing bore ofthe body and causing the clamping members to tightly grasp the cable.This grasp of the claniping members on the cable is also assisted andincreased bythe longitudinal play allowed the clamping members in thechamber 14 of the core.

ln some instances the clamping members may be dispensed with and theinterior of the core formed with spiral grooves or corrugations todirectly clamp the cable.

lt will be obvious that by the present iiivention, I have simplified andcheapened the construction ot' my prior patent herein referred to, bydispensing with several of its parts, and this has been done withoutdetractiiig from its eliiciency, and while I have specifically'described Athe construction ot the several parts, I do not wish to be,

understood as limiting myself tothese exact constructions, many changesand variations probably being possible without departing from the spiritand scope of the invention as claimed.

Having described my invention, what I claim as new and desire to secureby Letters Patent, isj l rope coupling comprising a tubular body formedwith a tapering longitudinal opening, the lower end of said openingbeing provided with tool engaging means, a longitudinally tapering corewithin said body, said core being formed of duplicate sections, eachsection having a tapering central recess and end grooves communicatingtherewith, said recesses and grooves forming when the sections areassembled a central'longitudinally tapering chamber and reducedlongitudinally extending guiding grooves, the upper ends of saidsections being externally threaded and projecting beyond the upper endof the body, clamping members Jformed of duplicate sections tted in andcorresponding to the center of the core chamber and having a limitedlongitudinal movement therein, and a nut engaging the threaded end ofthe core to lock the same within the body. 1

In testimony whereof, I affix my signature in presence of two witnesses.

WALLACE w. PAEME'rEE.

' Witnesses:

W. H. CAREY, RUEUe STONE.

